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TDA7389 Datasheet, PDF (9/14 Pages) STMicroelectronics – 4 x 45W quad bridge car radio amplifier
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TDA7389
Electrical specifications
Figure 9. Supply voltage rejection vs.
frequency
Figure 10. Crosstalk vs. frequency
100 SVR (dB)
90
80
70
60
50
Rg = 600Ω
40
Vripple = 1 Vrms
30
20
10
102
103
f (Hz)
SVR (dB)
100
90
80
70
60
RL = 4Ω
50
Po = 4W
Rg = 600Ω
40
30
104
105
10
102
AC00489
103
f (Hz)
104
105
AC00490
Figure 11. Output noise vs. source resistance Figure 12. Power dissipation & efficiency vs.
output power
180 En (µV)
160
Vs = 14.4V
140
RL = 4Ω
120
100
80
22-22K Hz lin
60
40
"A" wgtd
20
0
1
10
102
103
Rg (Ω)
80 Pdiss (W)
70
Vs = 13.2V
RL = 4 x 4Ω
60
f = 1 KHz
η (%)
80
η
70
60
50
50
40
40
Pdiss
30
30
20
20
10
10
0
0
104
105
0 2 4 6 8 10 12 14 16 18 20 22 24
AC00491
Po (W)
AC00492
Figure 13. ITU R-ARM frequency response,
weighting filter for transient pop
Output attenuation (dB)
10
0
-10
-20
-30
-40
-50
10
102
103
Hz
104
105
AC00343
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